Well, I'm not a bedwetter, never have been. On several occasions, though, I've gone to bed diapered and wet so much that my diapers and plastic pants leaked and I woke up in the middle of a big wet spot in the bed--so I do know how that feels.
And anybody who reads my posts here knows that I absolutely love the smell of pee. Fresh pee, my pee, my wife's pee. Wet pants, wet spots from leaking in my bed, and especially the smell of wet diapers. I love the smell when I'm wearing them and they are getting soaked. I love the smell of the wet ones in my diaper pail. I have a few pairs of adult-sized thick baby training pants and sometimes I wet those, hang them up to dry, then wet them again--several times just to concentrate that wonderful smell. If I'm ever visiting people who have kids that are still in diapers, I love the smell of those, too (once they're in the trash or the diaper pail--I have no interest in the kids themselves, just the diapers).
Nothing makes me as horny as smelling wet, peed in clothes (especially diapers). Except maybe the combination of that smell with pussy (which I occasionally get to enjoy when my wife wets her panties for me--which she'll do once in a blue moon).
I know that this isn't for everybody and some just really don't like it--but it's something I love.
And I've loved it since I was a kid and decided out of curiosity to peek into my younger female cousin's diaper pail. It was full of her soaking wet, yellow, pee-soaked diapers. The sweet-ammonia-pee smell was so strong that it almost knocked me over. It also gave me a big hard-on. I was only about six and didn't really know what was happening, I just know that I was excited, felt weak in the knees, and had that feeling that I later came to know as "being horny". After smelling them the first time I kept "having to go to the bathroom" so I could go back in there, lift the lid, and smell them again. I haven't stopped thinking about diapers since!